971 291 507 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite: 1 known prime factor

Factored

Factor	Digits	Bits	Date
68188157804747820334057	23	75.9	2024-09-23 19:50:14

History

Date	User	Type	Result
2025-06-12	Greg	F	Factor: 68188157804747820334057 / TF: 75-76
2024-09-23	srow7	F	Factor: 68188157804747820334057 / TF: 75-76*
2023-02-18	srow7	NF	no factor from 2^74 to 2^75
2022-04-15	srow7	NF	no factor from 2^73 to 2^74
2021-06-30	SRBase	NF	no factor from 2^72 to 2^73
2020-10-23	SRBase	NF	no factor from 2^71 to 2^72
2018-11-09	Niels_Mache_Nextcloud	NF	no factor from 2^70 to 2^71
2017-02-19	ramgeis	NF	no factor from 2^69 to 2^70
2016-11-01	Sergey Komolov	NF	no factor from 2^68 to 2^69
2016-06-03	NoPolarBearsHere	NF	no factor from 2^67 to 2^68
2015-02-10	Gordon Spence	NF	no factor from 2^66 to 2^67
2012-07-07	linded	NF	no factor from 2^65 to 2^66
2011-01-02	linded	NF	no factor from 2^64 to 2^65
2010-04-07	lindee	NF	no factor from 2^63 to 2^64